I say that because last week they were talking about this on Radio 2, on the Jeremy Vine Show I think.They explained all about Trig Points, their origins etc with an expert who phoned in.

They also said that a few years ago the government auctioned them all off, thus letting members of the public have a chance to 'adopt' one of them, and have a record of 'ownership'.

If I'm honest I've never heard of them before.

Also, looking through all the pictures and posts I've noticed that someone has posted a Trig Point literally just a stone's throw from where I live! Now that I know there's one in my vicinity I might go and look for it...